Cyber Resilience

CVE-2026-0400

Medium

Published: 24 February 2026

Published
24 February 2026
Modified
26 February 2026
KEV Added
—
Patch
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CVSS Score v3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0026 49.7th percentile
Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-0400 is a medium-severity Use of Externally-Controlled Format String (CWE-134) vulnerability in Sonicwall Sonicos. Its CVSS base score is 4.9 (Medium).

Operationally, ranked at the 49.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.

CWE(s)
CWE-134

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

sonicwall
sonicos
≤ 7.3.2-7010 · ≤ 8.2.0-8009

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References